Window latch



J. NLDUNCAN.

WINDOW LATCH. PPLICAVTI'ION FILED IULY 16.1920.

' Patented Mar. 28, 1922.

IN VENTOR.

Joann. :ovncnu, QF BOONE; town;

wmnow LATCH.

Application filed 3111116, 1920. Serial No.

To all whom/it may conceive;

Be it known that I, JOHN/,N. DUNoAi a citizen of the United States of America, and,

resident of Boone, Boone County, Iowa, have invented a, new and useful Window Latch of which the following is a speci fication. I

The object of this invention is to provide improved means for sup iorting a sash oii a. car-window at. a predetermined elevation.

A further object of this invention is to provide an improved construction. for a gravity-operated latch.

A further object; ofthis invention is to pliovide; improved, means for: pivotally mounting a; latch. I

A further, object of this invention is to. provide improved: means for protecting a jamb from wearbya latch.

A. fuiither. object of this: invention is to provide an improvedconstruction. for a strike memben adapted. to be mounted. on: a. sash and be engaged by a latch.

A further object of.v this invention is to provide alatch adaptedto be mounted pivotally, and for gravity operation. into. latching position, on window frame and a strike member fitted to. and adaptedtoengage said. latch. and be supported thereby, said; strikemember being adapted to be fixed; toasash. v

Myinvention consists in the construction, arrangement and combination, of. elements hereinafter set forth, pointed out in the claims and illustrated. by the accompanying drawing in WhiCh Figure l: is an elevation, partly. in section of a window frame and sash, showingmy improved devices mounted in latching position but out of engagement, Figure 2 is an elevation, partly in, section, at rightangle's toF-igure 1 the parts being shown; in the same. relative positions. Figure 3 is a top, view of the latch, device mun-latching position, a portion of the handle beingbrokenaway. Figure 4. is. a side elevation of the latch plate including the flange omitted; in Figure 2. l y

Figure 5. is, an edge view ofa portion of, a, sash, showing a modified form of engaging means for the latch. l y i Inthe construction and mounting of the devicesv as, shown. the numeral 10 designates a latch plate which is formed with. parallel flanges 11, one of which is. shown in Figure 2,, of less, length than the plate, andg xtend Specification of Letters latent; Patented Mar. 28', 1922.

ing, in spaced relation, from the rear face and: adjacent the side margins. Of the plate- The latchplate l0.is forinedwith an angularhole 12 in itscentral portion,,which hole is. of, substantially the. same. width; asv the space, between the flanges ll. The latch plate 10 also. is formed with screw, holes near its ends. Registering holes l1 generally, circular in form are formed in the lowen end-portions of the flanges 11 and: one of saidholes; in the flange removed in. Figure 2, is formed,

with. a key-way 1l opening to its; upper.

portion. A latch, 13 is'mounted, loosely in the; space between the flanges 1.1 and sub;

stantially fills; the width. of said space-., The

latch. is. formed, with: a hole, 14:, generally circular in, form, adapted to register with. and; of the same, Size as the l 1o;les ,on"the flanges 11,. near its lowerend. and, said hole is: termed, with a key-way 15 opening to. its. upper portion and adapted to register at: times with the key-way; the foremost;

flange. A latchrhandle, 16, of elbow shape,

has one end-portion formed touextendz through the holes in the flanges and'latch in iegister and journal in the holes in the g s; id p r on of the handle. being provided with a feather or key 17. adapted to, pass, through, the key-way in the flange and, engage in the keyway in the latch. The feather" or key 17 tends tohold the, handle against later l movement out of the holes, after it has been mounted manually by hand-register; of the key-ways. The latch landleisformed with a thumb-pieceor lug 18 on its outer end The latch 13 l o is formed with :1 ug 19'on' tscent ra l Po on. adap edto project thr ugh the a ien: lar hole in the latch-plate; 10* and also is f rme v th a. ip 20 n ts upper end fitted to. and adap ed t engage the, p at 1 at he uppe marg n. of. e angular hole. 2

The lng 19, is formed with a plane upper face 21 fo ming an acute angle w th ts f ont face 22 and adapted. to, fo m, hen. in latc ing position, a right angle with theplfane of the latch-p ate 1.0. The l tch-plate a flanges 11 carrying the lithch. nd fil dl i a adapted, to be mounted in a mortise in a;

i -ml) 23., a P i n a ac en i he mob tise being of. es d p h. an its cent poron. to seat end portions of the plat n the plate may besecured as shown by screws 24 mounted through the screw-holes therein nd. eated in he jembh mort in I the jamb is formed at and opens to the bot-;

side faces of the stile.

tom of a slide-way in which one side portion or stile 26 of a sash is mountedand. adapted to slide, theopposing jamb (not shown) being provided with a similar icoacting slideway of common form to accommodate the opposite stile of the sash. or notches'are formed in the lower portion of the outer face. the sideface and across the bottom of the stile 26 and a metal strike-member 27 is countersunk therein and secured to the stile. The strike member 27 is angular in, cross-section and embraces one edge of the stile 26 within the gains or notches and the lower end portion thereof is formedwith a flat lug 28, lying in, the notch in the'bottom of the stile and forming" right angles with the front, rear and i The lower face of the flat lug 28 is adapted to engage'and rest at times on the flatface 21 of the lug 19 'onfthe latch 13, when the latter is in latching position as shown, whereby the sash is supported at predetermined eleration by said latch. jA portion 2- 9 offthe mortise in thejamb 23 extends laterally from the body ofithe mortise to accommodate the handle v 15 for oscillation therein, and a protecting plate 30 formed with a notch 31 is mounted on the jamb;'th e notch 31 registering with the portion 29 and loosely embracing the handle. The protecting plate 30 'is positioned wholly at one side of the slideway 25.

The lower end tion, anda plurality: of them may be em- 'ployed. at

(different elevations to support the sash in-any spaced relation to the sill 32; and, when the parts arefarranged to support a sash, ail-upward manual movement of the handle 16 'isnecessary to remove the latch from latching position; Also, on account of the coaction of the flatface 21 with sary to raise the sash manually before oscila l lating theflatch T3 to releasing position; These arrangements and elements tend to stable pos tioning and support of the sash and prevent;'accidental descent 'thereof, thus avoiding. risk of 1n ur1 ng'a hand, arm or other member extended beneath said sash. Amer theelements,exceptthe screws, may

be made-of metal by molding, thus provid;

v V V of the sash preferably is beveled to contact with andfit the upper V the flat bottom face" of the lug'28, it is neces! ing for their pro duction economically, owing to the simple lines -and constructi on there; of; Yeryv littlemachining isfrequired and i 'it is ofthe simplest character, 3 thus making convenient andecon'omical theassembling of the device; whichhol'es is In Figure 5 I have shown a different form of latch strike or engaging member adapted to be secured to a sash at a point above the lowermargin thereof. A plate 34c'is c'ou'nter-.

sunk in the outer face of the stile 26 and secured by means of screws The plate, 8

is formed wlth a rectangular hole oadap' ted to receive the lug 19 of the latch member to support the sash in open position. The plate engagevabove the fupper'rail of a sash to latchthe sash in closed position; orto limit upward movement thereoftoany desired degree, thus adapting it to a l opened 'suficiently to provide ventilation and yet prevent the entrance of an unauthorized person through the window opening. The handle 18 might be rearranged so thatwhen in inverted position the tendency of the latch will be to remain open through forceof gravity. e I

I Claim asmy inventi0n v K i 1. A car-window latch comprising al'atch plate adapted to be' m'ounted in a window jamb" and formed with a, hole "opening through the front of the jamb, a latch mounted for oscillation on said plate and vformed with a member adapted to project said hole in said plate, and 'a' strike memberadapted to be mounted on a sash and adapted 'to engage' said projecting member ofthe latch attimes, .said'latch also'being formed with a lip adapted to engage said plate at one margin of said hole to limitoscillatory movement of, said latch in' one direction when the sash is raised above the level of said'latch.

f2. A'car-wln'dow latch comprising allatch through plate adapted to be mounted in' a window amb, a'latch mounted for oscillation .on said plate and formedw thfa member, having a flat contact face,"

adapted to be mounted on a sash andformed f burglanproof lock or latch which will perm it the sas'h to be 7 adapted toproject through said plate, ,and astrikev member with a fiat contact face adapted to engage the flat contact face on. the latch member 'at times, said latch beingiprovided with an elbow-shaped handle member extending'across the plane of said plate and by gravity tendto move said latch to operative position.

I A car-window latch comprising a latch plate formed with spaced flanges, the latter being formed with registering holes one of formed with a key-way, the

ivay in the latch, said projecting member being adapted to be engaged by and support a sliding sash.

4. In a Window latch, a latch plate formed with spaced flanges, the latter being formed with registeringholes one of which holes is formed With a key-Way, a latch mounted between said flanges and having a hole With a key vay registering With the holes of the flanges, said latch being adapted to be so turned as to register said key-ways, and a handle extending through the holes in said flanges and latch and formed With a featherengaging the key-Way in the latch.

5. The combination of a latch device adapted to be mounted on a vertical Windowjamb and having a handle projecting away from said jamb, said handle being of elbow shape and extending across the plane of said latch device, gravity tending to move said latch to operative position, a protecting plate on said jamb formed with a notch embracing said handle loosely, and 'a strike member adapted to be mounted on a vertically-slid able sash and also adapted to engage said latch-device at times, said engagement being suspendible by manual oscillation of said handle.

Signed at Des Moines, in the county of Polk and State of IoWa,-this 9th day of July, 1920.

JOHN N. DUN CAN. 

